Delaware, IA Weather & Growing Conditions
Today
79°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Partly sunny. High near 79, with temperatures falling to around 77 in the afternoon. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 45% |
| Tonight | 62°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 74% |
| Wednesday | 73°F | Showers And Thunderstorms Likely | 5 mph N | 55% |
| Wednesday Night | 56°F | Chance Rain Showers | 0 to 5 mph N | 26% |
| Thursday | 78°F | Slight Chance Rain Showers then Sunny | 0 to 5 mph NE | 18% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 1% |
| Friday | 80°F | Sunny | 0 to 10 mph S | 3% |
| Friday Night | 64°F | Mostly Clear | 5 mph S | 9% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph S | 11% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 10 mph S | 26% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 10 to 15 mph S | 26% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 10 mph S | 41% |
| Monday | 84°F | Chance Showers And Thunderstorms | 10 mph S | 41% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 to 15 mph E | 38% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Delaware, IA
Last spring frost
May 3
First fall frost
Oct 4
Growing season
154 days
Hardiness zone
4b
Explore more for Delaware, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Manchester #2, Ia (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.